RubyMine and Rails Associations Question

This is a bit more complicated than my previous question, so I'm hoping some one can help me make sense of it :)

I really like the attribute identification support that RubyMine has - it helps me avoid typos and errors quite a bit.  But I'm working on setting up some Machinist Blueprints (fixture replacement) and having some trouble with RM seeing a "belongs_to" association as an invalid attribute.  For example:

ServerType.blueprint do
  name
end


Server.blueprint do
  name
  server_type { ServerType.make }
end

# The models:

class Server < ActiveRecord::Base
  belongs_to :server_type
end

class ServerType < ActiveRecord::Base
  # just has a name and an id
end

When I define the blueprint (above) in RubyMine, it does the fuzzy-underline on the server_type attribute, saying that it can't actually "resolve" that (my wording).  Clearly it does work, however.  So my question is, how can I get RM to properly identify that association and not display an inspector warning?

Thanks!